Refactor IID logic into marshaller type #6074

Job	Run time
build-packages	4m 23s
build-solution (Debug, x64)	6m 56s
build-solution (Debug, arm64)	6m 57s
build-solution (Release, x64)	5m 40s
build-solution (Release, arm64)	7m 36s
verify-packages	6m 5s
run-tests-d3d12ma	5m 2s
run-samples-aot (x64)	9m 51s
run-samples	3m 16s
run-tests	7m 48s
run-samples-aot (arm64)	6m 41s
run-tests-win2d	5m 27s
publish-nightlies-github	22s
publish-nightlies-azure-devops	28s
	1h 16m 32s

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